* Power Schemes
1. Disable the Turn off monitor option.
2. Disable the System Standby option.
3. Disable the System Hibernates option.

* VAIO Power Management
1. Set LCD Brightness - Running on batteries to Level 2.
2. Click the Advanced tab and select the VAIO Power Management tab but disable Automatically hibernates when computer goes into a low-power state option.

* VAIO Power Management.
1. Set LCD Brightness - Running on batteries to Level 1.
2. Click the Advanced tab and select the VAIO Power Management tab but disable Automatically hibernates when computer goes into a low-power state option.

For more information on JEITA Battery Run Time Measurement Method for VAIO notebook, please click here.